Bronco L6-300 4.9L VIN Y 1-bbl (1983)
Clutch Release Bearing: Customer Interest
Clutch - Release Bearing Squeak/Scrape
Article No. 85-2-14
CLUTCH - RELEASE BEARING SQUEAK/SCRAPE
LIGHT TRUCKS 1982-83 E & F150-350, BRONCO
The concern is usually characterized by a squeal which occurs with the engine running and light pressure applied to the clutch pedal. The squeal stops
when greater force is applied to the pedal, which occurs when disengaging the clutch. Under light pedal pressure, the release bearing load is insufficient
to overcome the friction of the stationary bearing, and metal to metal squeal/scrape results between the bearing and the rotating pressure plate. Under
greater axial loads, the bearing rotates with the pressure plate, and the squeal stops.
Major factors which tend to increase the tendency for a release bearing to squeal are as follows:
1.
Insufficient free play.
2.
Lack of clutch housing concentricity and parallelism.
3.
Out of plane pressure fingers.
The recommended respective diagnostic/service procedure for the above factors are as follows:
1.
Check clutch linkage free play per Section 16-03 of 1983 Light Truck Shop Manual.
2.
Check clutch housing bore and face run out per Shop Manual procedure Section 16-01.
3.
Check pressure plate finger heights per Shop Manual procedure Section 16-01.
Replace bearing if all of the above have been investigated and found acceptable. Customers also should be advised that light pedal pressure may result in
squeal at the onset of clutch engagement with the free play type clutch linkage system.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP7003D83
TIME:
0.8 Hr. (Plus applicable standard times) DLR. CODING: Basic Part No. 7580 Code: 56
